OS Problem...Slow PC...Recover to previous state...Help!

I have currently installed windows XP service pack 2. My sister has installed a vista theme pack over the windows xp while i was away.Now it was super slow.so i un-installed the theme pack.

But now it gives various kind of missing dlls annd registry errors.I can't re-install Windows XP cause i am super busy with my exams and also i don't have time to re-install all those softwares. So can any one help? I dnt have system restore point as well.

sorry for the late reply.I was super busy with my exams.Oh..seems like i am going to have hard time finding all those softwares currently installed.Anyway today one of my friend told me about a registry cleaner software called JV Powertools 2009. he said it had helped him lot of times..when his pc gets crashed because of unwanted softwares.So i am going to give a one last try with it before format the pc. going to try it now and let you know. thanks for the help. really appreciate it.

hi all, hope you all doing well.it's been some time that i last contributed to the forum. i was super busy in last weeks.however i am very happy to say that JV Powertools 2009 worked for me. i feel really like to got that before things getting worse.

really recommend it with honest trust to anyone and really impressed with it.by the way i want to thank again you all, about the help you have given.bye all.